Movie: Microlensing by a star with a planet
see
http://www.eso.org/outreach/press-rel/pr-2006/pr-03-06.html for the
result of such observations.
Credit: OGLE, PLANET/RoboNet, OGLE, and MOA (see below)
This result is a joint effort of three independent microlensing campaigns: PLANET/RoboNet, OGLE, and MOA, involving a total of 73 collaborators affiliated with 32 institutions in 12 countries (France, United Kingdom, Poland, Denmark, Germany, Austria, Chile, Australia, New Zealand, United States of America, South Africa, and Japan).
Original video at: http://www.eso.org/outreach/press-rel/pr-2006/vid-03-06.html